Properties of circularly polarized vortex beams

The properties of circularly polarized vortex beams in cylindrical polarization bases are studied. A circularly polarized vortex beam is decomposed into radial and azimuthal polarization. With the proper combination of vortex charge and the handedness of the circular polarization, a focal field with...

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Veröffentlicht in:	Optics letters 2006-04, Vol.31 (7), p.867-869
1. Verfasser:	Zhan, Qiwen
Format:	Artikel
Sprache:	eng
Schlagworte:	Diffraction and scattering Exact sciences and technology Fundamental areas of phenomenology (including applications) Optics Physics Polarization Wave optics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The properties of circularly polarized vortex beams in cylindrical polarization bases are studied. A circularly polarized vortex beam is decomposed into radial and azimuthal polarization. With the proper combination of vortex charge and the handedness of the circular polarization, a focal field with an extremely strong longitudinal component as well as a flat-topped profile can be obtained. The cylindrical decomposition also sheds light on the connections between orbital angular momentum and the spin of the light beams.
ISSN:	0146-9592 1539-4794
DOI:	10.1364/OL.31.000867